I want to be healthy and enjoy an active life without physical limitations. I have always been fortunate to maintain a slim build so not looking to lose weight.
Got it.
YOUR GOALS are:
(1) Maintain relative proportions God has given you,
(2) Tone your muscles, and
(3) Increase flexibility, and
(4) Increase your capability to do physical work (endurance) or recreational activities.
So I would say I want to feel good and be healthy paramount, with the fringe benefits of looking even better

LOL!
Vanity is not a crime, I call it "advanced self esteem."
My body weight at 132 (so about 8 lbs less than I weight now).
Sounds like you are at a healthy bodyweight if you are anywhere near (+/- an inch or two) the female average height of 5'6."
What is your height, if I might ask, just for the sake of reference?
I am looking to increase my flexibility and tone my muscles, not build muscle mass.
See "YOUR GOALS" above...
I want to be able to go hiking and not get winded, so the ability to perform about an hour of a spontaneous physical task without really feeling it.
Perfect. I have a very easy means of you to improve your capacity for hking at any hour of any day. Get ready for answer #1:
ANSWER #1:
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Ankle weights are a great way to turn everyday activities into exercise.

You can buy a pair from Wal-Mart.com for $15.
Search results for ankle weights - Walmart
Ten pounds might not seem like a lot, but if you consider how many steps you walk, or stairs you climb in a day, it will add up quickly, as each step you are performing muscular work. Your
LEGS will get stronger, and more tone, and you will be burning calories, and increasing your endurance simply by doing things like:
(a) Housework, yardwork, or even walking around your office.
(b) Walking lunges in your home or backyard, great for glutes and hamstring toning!
(c) Calf raises on a set of stairs accessible to you. Hold onto a railing or something else, one leg at a time, put your toes and first inch or so of your foot on the step, and let the rest of your foot remain off the step. Now flex your calf and raise yourself up, then relax the calf and go back down, not just to parallel with the step, but let your ankle drop down past the step, which stretches your calf further, tightens it, and will help with flexibility some ultimately.
But what about your
ARMS? That's a great segway into ANSWER #2:
ANSWER #2:
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Wrist weights can do for your arms, what ankle weights can do for your legs.
Again, rock on Wal-Mart.com:
Search results for wrist weights - Walmart
These even come in cute colors for girls!
OK you can strengthen and tone your arms with wrist weights by:
(a) Wearing them during housework, yardwork, office work, cooking, etc.
(b) Performing simple exercise movements like shoulder raises, biceps curls, triceps extensions, shoulder press, etc. (I'll find you a good web reference for illustrations as to how to do these, a little later today.

)
(c) "Power walking." It looks funny, but it works!
Well, there's not really a financial threshold. But I feel like I shouldn't have to rely on someone else to motivate me at this point in my life. Do you know what I mean? I don't want a personal trainer again because I only exercise to "please" them instead of myself.
Regarding equipment, there's only one thing I'd recommend you look into purchasing upfront:
A Dumbbell Set.
Why?
Wrist weights and ankle weights are great, but there are some things you can't do with them:
(a) Improve your grip, which is very healthy to do.
(b) To formally execute a number of different resistance training movements that are simple to do at home, but just won't make sense unless you are holding something in your hand.
(c) You can't take advantage of dirty little tricks like super-sets or giant-sets (to be revealed in Halla's advanced class

) without dumbbells or barbells. Personally, I don't like barbells in my house anymore. I have no room for a big ass metal bar and plates everywhere. Dumbbells are great. They are small, can be stashed anywhere, and just as versatile as barbells, if not more so, as you don't have to change the weight on dumbbells all the time.
Check this out:
Fixed dumbbell set, 3 different pair, I like Cory Everson's starter set ($70):
Walmart.com: Cory Everson 32 lbs Dumbbell Set: Exercise & Fitness
"This stylish and functional dumbbell set has everything you need for the ultimate strength building and toning workout. Our durable dumbbells are soft - coat covered for a comfortable, easy grip. The set includes 3 pairs of dumbbells: 3 lbs, 5 lbs and 8 lbs pairs, as well as a dumbbell training DVD - enjoy a private class at home! Also included are an attractive, handy storage rack and a dumbbell workout poster with step-by-step instructions for toning and strengthening workouts.
Features:
-32 pound dumbbell set for toning and strengthening muscles
-Pair of 3 pound, 5 pound, and 8 pound dumbbells (3 pairs! No changing plates, ever!)
-
Contoured shape and easy to grip neoprene covering
-Comes with custom dumbbell rack that's easy to load and unload
-
Includes workout DVD and instructional wall poster
-Fitted for beginners to the extremely fit
-Overall Dimensions: 15.5'' H x 11.8'' W x 12'' D
^That was in response to my question of "Could you devote 1 hour 3-4 times per week to your fitness?
So, my advice to get you started:
(1) Wrist and ankle weights for passive resistance training and endurance training.
(2) Buy the dumbbell set, and learn the DVD completely. It will be a great base to work from as you get more skilled and fit.
(3) Walk and jog as often as you can, for a minimum of 30 minutes, up to an hour if you can hack it. Use your MP3 player!
(4) Do a quick check on your diet. I'll post my general fitness and nutrition tips beneath this so you can refer to it.
The benefits to you exercising are:
(1) Maintain your figure
(2) Increase strength
(3) Increase endurance
(4) Increase flexibility
(5) Stay off osteoporosis. Women lose 2% of their bone mass every year after age 30 I hear, resistance trianing is the only form of exercise that can significantly slow it down.
How's that for chapter 1 of your new routine?
Sorry it took so long to get back to you!
Cheers,
-Halla