howdy from a texan .... and welcome to the forum and family...there's quiet a few knowledgeable folks here that'll gladly tell ya what you need to know,or at least point ya in the right direction and/or give ya a good idea or 2..and by all means jump right on in with any replies you have on a topic.and start new topics if/when needed...
movies are movies,good entertainment,just browse here and ask you'll get a lot more info,you wanna know abt small unit tactics check out what Silent Bob posted,nice size pdf-file abt it.
if you don't have ziljons of extra money,take babysteps and think do i need this or not??
do your prepps to look like you ,not like a movie