This depends heavily on your position and the stack sizes at your table. From early position you tend to need a stronger hand to raise with, so a minimum raise may be enough to be taken seriously by your opponents, while raising from the button is a common move (to ‘steal the blinds’) so a larger bet may be in order. Middle position is trickier, but as a baseline we’d recommend raising three times the big blind with hands like 22+/AT+/KJ+/89s-JQs/A2s-A5s – around 15.5% of hands. If we have tight players on our left we can start to raise with hands like 56s-78s and QJ/A9s/K9s/KTs/QTs/J9s, opening up our range even more.