Hi this is one of the worst league for a beginner as the league mechanics are awfull.
some good beginner channels:
https://www.youtube.com/channel/UCaF...7a6Q/playlists
engineering eternity channel (not sure his beginner's guide are updated but they are good for all base mechanics).
The other one very noob friendly is ziggyd channel:
https://www.youtube.com/channel/UC4m...qk4y9lVFtfanlg
Even the pro streamers watch his league explanation videos since he tries to engage with league specific content very early.
also check out liftingnerdbro channel ,here's one with beginner's builds:
https://www.youtube.com/watch?v=MCUAxqjkmTQ
Until you are really familiar with the game, the consensus is to follow a build to the letter.
Look up for cheap beginner builds either on youtube or on the POE forums (which contains lot of guides really well explained).
To pick a build choose a skill that you like and search for builds with that skill in the name (ex:winter orb build,molten strike build...etc.).
Some good sites that you'll have open all the time :
https://poe.ninja/challenge/currency
helps for trading and checking overall prices,also contains a build section.
https://www.pathofexile.com/trade/search/Synthesis
to look for specific items,copy paste in chat to initiate trading.
pathofbuilding (not sure which site to download from) is the ultimate build tool.