Hey, it's cool that Fallout 3 has inspired you to try Fallout 1. From what I have seen (mostly youtube video comments, but that doesn't really reflect any aspect of reality) a lot of Fallout 3 fans see the originals as "cheesy" and "gay". I haven't gotten aroudn to trying Fallout 3 yet but it looks like a blast.
Anyway, my advice is this... Take Gifted, and then pump your intelligence up to ten, it'll counteract the skill loss. Skills aren't quite as important as they seem. Never put a single point into Throwing, it's the scrub skill of Fallout. Grenades are useless except for trading. Focus on small guns like these other guys have said.
Spoiler alert!
Spoiler In the Hub, there's a guy who needs you to do a quest for him, to clear his farm of a bunch of raiders. He gives you the best gun in the game, the .223 Pistol in return. Do this as soon as possible.