with a little experience under my belt with stocks, and penny stocks, I find even the best penny shares can fail, you then have crypto, which i recently got back into little over a year ago.
with crypto being an unregulated market, you have a higher risk of falling victim to a scam, you also have the risk factor of volitility, and then you have the risk of a coin just dying.
because i am not a financial advisor, I will give you the basis of what I do.
if I have properly researched the alt coin project, and I am at least a little confident that it isn't a scam, then i will invest anywhere from >1% to 5% of my total investment into that coin. this isn't including the more secure projects like btc, ether ect...
I will then hold and monitor the market and coin. also this forum. Then adjust based on how the project is coming along.
I have fallen for a few scams in the past, I have also invested in coins which ended up dying, I have also invested in coins which have seen substantial gains. There are some coins I wish I put a little more into, and other coins which I should have stayed with when development was slow. I also mine coins and put the profits into most new coins. the only scams I baught into were bitconnect ico, also davor coin ico, I knew the risk with it and didn't put in more than i was willing to lose. on bitconnect I did make quite a bit of profit from the ico, but sold half of it early on, then "invested" the other half, did the same with davor.
still a lot of great advice from people here, just thought I would butt in for a change.