HOW DO I START IN SHARE MARKET?

I have been applying IPOs for a while now and have accumulated a small portfolio too. Now I want to start investing in the secondary market and trading some of the stocks I have. I have all the necessary subscriptions like TMS and all.
Could anybody suggest me some videos, books on how I should approach the share market as a beginner?
It is not that I haven't searched for it myself, but I haven't found what I've been looking for. I am looking for videos /books that will help me learn about the markers of the share market in Nepal and help me decide on the value of the stocks rather than being dependent upon analysis of others.

Thank you in advance!