With two Jacks I will raise from any position if I am the first player in the pot. If I get re-raised out of position I will just call, see the flop, and then decide whether to continue. Do keep in mind though that by being out of position it gives you the ability to act first. So if you think your opponent missed you can fire out even with an overcard on board and if your read is right they are likely to lay down. Furthermore, if you think they hit and yet your still ahead with an overpair yu can check to induce a bet and then come over the top of them and maximize your profit. Now suppose you are in late position and a couple of players have limped in front of you – you are still going to raise the pot. Why? To eliminate the blinds and everyone still to act behind you, if possible, and to build the pot. If you are next to the button or on the button, you should always raise with jacks if the pot has not been raised yet. If you get unlucky and an ace, king or queen flops, you can always get rid of the hand. By re-raising you also might knock out the people between you and the first bettor. If you get re-raised, you must put your opponent on a range of hands. Based on the range of hands you put your opponent on just smooth call if you think you are at least 50/50 (in other words they have two over cards). However if your confident you are a huge favorite go over the top of them all in, or try and induce action with a smooth call and move in after they fire a bet on the flop. Remember that poker is a big-card game and people call raises with Q-J. If the flop comes 10-9-8 the holder of Q-J has the bigger straight. After the flop watch out for dangers, or it could cost you big!