I have sometimes played the really low ($0.01/0.02) stakes tables when new to a site and learning the interface.
The play at that level is usually very loose, and therefore you should play tight, premium hands only. The players are generally not observant and will cheerfully call your raise, not realising that you are playing very few hands and are likely to have a monster.
Do not bluff, because they will call with anything playable.
Do not get greedy. When you have won a little, pocket it and move to another table. Because the other players chase against the odds
, they will sometimes hit a miracle card and take the stack you spent an hour building, which is really
The standard changes noticeably around $0.10/0.25 to $0.50/1.00 (varies from site to site). Once you get up the limits, there are still plenty of fools about but there are also competent players who just don`t have a lot of cash, or are bumming around waiting for their tourney. Now you have to watch the game closely and get a read on your opponents.