I'm extrovert, although on the borderline between it and introvert, sometimes I dream about a silent earth or empty earth scenario, I'd love to be able to take protracted periods of time, I mean years, to myself but its not possible.
There are things I do when I dont have the opportunities to be social and feel a sort of social drive or impetus, I journal a lot, at length, some of it is pages and pages of quasi-cathartic writing, I review stuff on Amazon, I read, lots and lots and lots of reading, I've thought about it a lot and sometimes I read books when I cant find people who're interested in the same things as me and I treat them almost like someone has written to me, the journalling is like writing to someone else, which I used to do a lot when I was younger, not even always sending the letters but I had one friend who I used to write to a lot. I have no contact with them what so ever now.
Extroverted Thinking:
I can only talk of my own experience and that would be that read lots and lots and lots and then create huge plans, incoporating schedules, micro schedules, review dates, precise plans, usually it all comes to nothing or something much less elaborate would suffice. This is something which puts the greatest amount of distance between me and others, people hate it, really they do, and instead they are happy to get by with less, much less and think its a unnecessary or sometimes is snobbery or pretentious or an expression of some sort of superiority or controlling mindset, which it is not.
Also essay writing, I've not done it lately by I tend to write at length sometimes on topics I've been reading about, musing about or which just always are on my mind one way or another.
Online forums are almost designed with me in mind when it comes to all this sort of thing. Its pretty constant and I often have to think again about what I'm going to share.