I would say keep at it
Mig welding is very easy once you have the knack, if you post up what problems you are having and some pictures of your attemps im sure people on here will give you some sound advice
Get yourself another screen that isnt too dark for starters, it doesnt have to be an automated one just an ordinary flip down one will suffice if you are watching the pennies like most of us are!
Its probably something stupid holding you back such as wire speed and other settings. If you manage to master it you will have that feel good factor of saying i built that
As previously stated ask for help and post some pics, dont be embarrassed to ask, there was a point when none of us could weld