I will love to follow step by steps advise that you personally used to gain value of digital assets in short or long term investment/trading?
it's like earning any other coin. you get paid if you work, perform services, sell objects and so on. You can simply exchange your fiat currency into this currency.
Where do I begins?
The forum is a mine of information. Do the right research, ask the right questions, lots of information is always freely available. Try to understand what bitcoin is, how it works, what potential advantages it has etc etc…
What's the best wallet you're using?
There are many wallets as already suggested in previous posts. If you want to learn more about the topic and understand how to generate an ultra-secure wallet (but with complex procedures) take a look at "glacier protocol".
Where do I buy bitcoin with easy exchange without scams?
this depends on the country/continent where you live. If you carry out p2p transactions, use only reliable sellers and above all always and only go to well-known sites.
Finally, should I do it now that the price is not stable or I should wait a little in case it goes down again?
Nobody knows if the price goes up or down in a "short" time (more or less in the long run we all hope/think that they will be worth more
).
The solution is to make constant purchases every month regardless of their price. Obviously a figure such that you do not create problems to spend.