The main issues for a new chaser, IMO are not what you'd expect. When you're inexperienced, the biggest problem is busting your target area and not getting to the right storm at all. So at first, the hazards of the supercell environment are negligible because you're hardly ever in them! 'Armchair' forefcasting and chasing are great, cost-free ways to practice forecasting without the expense of a bust. Learning to forecast takes a lot of time and patience but is worth it.
I think the biggest danger to new and veteran chasers alike is the highway and the vehicles we drive, a far greater concern than any hailstone, tornado, wind gust or lightning strike. Our chase vehicles on the inside and the sky on the outside super-saturate our attention with more distractions than we can often handle. Tagging along and/or having a chase partner to take the extra tasks off of you, the driver, will ensure you can keep your eyes on the road and stay safe.
So, I think it's best to 'tag along' at first so you'll have a better chance of actually seeing worthwhile storms, and remember to pay attention to your driving more than anything else.