i'm a bit new on the ground. trying to explore how does it work in theory?
when miner selects transactions for candidate block, they usually pick transactions with higher fee. can they pick any valid transactions with significantly low fee? if they can, how all these things work? is it manually adding a list of transactions? or automatically? i guess if it's an automated process, miner can't pick low fee transaction at all but i read that miners can include any transactions they want for the candidate block.

right now, i'm using trezor hardware wallet for almost a year. it has been a fantastic experience so far. i had never planned to use other wallet. but i have one friend who has invested in bitcoin long ago. we had shared a lot of plan, ideas, opinion with one another. at some point, i mentioned my long term plan about bitcoin that i'm planning for holding bitcoin for next 10 years, will buy a hardware wallet for that. recently, i had my birthday and surprisingly, he gifted me a ledger nano s and asked me to use that wallet for my long term plan.
i don't know why i got a bad feeling. i have read we must not use a wallet unless it's from authentic site.
how would i know i'm not going to be tricked by my friend. i trust him a lot to be honest, i know he isn’t going to betray me but there's nothing wrong to be sure that there's nothing wrong. how can i do that? how can i be sure that i'm not going to use a wallet with bug/malware installed to fuck my life savings.

i don't know how the fuck i did that holy shit. i was trying to send 0.01 btc to my friend as he wanted to check out how bitcoin works. he sent me the address last night. i had the address copied and pasted in sending tab and sent. but my friend said he didn't receive. when i explored, i discovered i sent in a wrong address. how the fuck that shit happened? i still remember i had the address copied.

i have downloaded the bitcoin core app last night and started sync but it just has got 9% of the blockchain in total. why is this slow as hell? looking for ways to bypass the sync process for bitcoin core. i have found electrum to use as alternative but read bitcoin core is the native wallet and have better features, benefits than wallet like electrum.

i had tried to purchase bitcoin anonymously but ended up purchasing with my paypal which now turned into a huge pain in the ass. i have purchased from p2p market where only the sender knows my paypal and so does my bitcoin address. how can i get out of that? i know bitcoin addresses are transparent and can be traced by others who know my address. how come i be escaped from the tail i left through my paypal and the address?

hey folks, i have been looking for ways to purchase bitcoin anonymously, can i purchase in such a way? i have tried googling and found some ways which in fact not dealing anonymously as they require my identity to be published to the seller which i'm not comfortable with.