I have not played a hand of poker in my life so I will take everybody's sound advice here and not go against these high rollers at all the poker sites.
I will stick with blackjack cause it is fast paced and better to play for not so experienced card players. I believe this is where you learn the basics of how to play at any card game.
But I always wondered: Does it matter in blackjack how many players are playing at your table? Does it lessen your odds to have a winning hand if there are more players sitting in at the table?
1st position or last position should matter either I would imagine.
depends on how many decks and how often they shuffle.
Most games I have seen online have an 8 deck shoe and it reshuffles all 8 decks after each hand. When that is done, you will not see enough cards in one game for it to change the strategy. In a real casino or with 1 deck, the more cards you see, the more you know about what cards are left and can use that to adjust your strategy accordingly. That's called counting cards and is very difficult.
Number of players/order doesn't matter. If you beat the dealer you win, if you don't you lose. Doesn't matter what anyone else does, and the dealer's actions won't be impacted either because they hit or stay only based on their cards, they don't care what anyone else has.
Some people (foolishly) would rather go last so they can do the "right" thing and not let someone else "screw up" the cards. this is foolish because they can "screw it up" just a badly from anywhere at the table, and in my experience the number of times someone "making a mistake" screws everyone over and saves everyone tends to balance out. But, if it makes you feel better, you should go last.