So i came across this bike by chance and we have got along well doing winter street/off road riding It]s a 1980's Scott boulder. I really want to get into actual mountain biking. But I don't have a ton of cash to buy a new bike. I was wondering what I can do to this bike to make it an acceptable mountain bike for riding some real mountain bike trails this summer. One thing I have noticed is it is Very heavy, and I'm sure there isn't an easy fix for that. If I say, changed up the wheel/tires, got a suspension fork, maybe a different crank set for making it easier up steep hills. What else could I do to make this a useable mountain bike for a first time rider? Ive ridden it downhill on trails and it is a blast, but making it up the hill though is really kinda hard. Thanks for any options. I would love to put some money into this bike rather than buying a new one.