thanks for the advice, i actually have played the San andreas (pc version not xbox) one for many years, but i had to have one of my kids get through the flight school for me, because after a couple months of trying and failing i asked for help.
also in san andreas i never could complete the driving school, i failed it every time, hundreds of trys, could not understand what key sequences on the pc keyboard would perform the stunts the driving school required. failed every time, (literally 100's of attempts) so i never got to the part where you can steal cars and make money. i really liked the gang wars the best, and play a saved version of that just for fun, i never get tired of it.
never played version IV, so you are right about that. i have been practicing with Trevor and his crew, i somehow got his truck upgraded with a better transmission, roll over cage and bullet proof tires. I went racing around the desert to improve his driving skill but it never goes up? bought some great guns at the ammo shop and then went up to the bay where on the water tower i picked up the sniper rifle, stood on that spot for awhile to load up on ammo for it, went back to the first cut scene with the bikers and lost the mission on the road race to the trailer park, has to start all over again.
i will keep trying, you can bet on that.