what games do you play? in mtt the first is a shove, but in an STT it's likely a fold.
If you are jamming over limpers you just have to shove ranges that dominate their range. So if he limps 50% of hands, jam around 25% of hands, then take into account position and how many left to act, stage of game etc to tweak it. So if you have many players left you might want to only shove 10% of hands, but you only have 6bb and your desperate in an MTT, so you want to readjust that to like20-25% again to account for that. also take into account player tendancies, you can shove much wider over a limper who you know also folds alot. but a limper that calls with a wide range you will have to tighten up again.
you will have to work with ICM calculators to get a feel for what ranges to jam over limpers, also