Well, it's the network usage fee... It depends on the digital asset you choose #DASH , #Ltc are old extremely low transaction fees and we have #Eth and the projects that are built on it (+ expensive) ..
The topic is very broad there is #Solana and the fans of #memecoin there is also Dot in short, there are many digital assets on the list, it depends on the point of view you choose, also if you want to generate passive income look for projects that use POS, an example etherum 2.0 you need 32 eth quite a large amount to start, there is btc with their POW if you have it for the mining rigs.
I give you another option Dot that you can join a validator very few people know about the subject and invest what you would spend on a mining rig apart from the electricity costs they generate.
🃏 Solana in its own wallet just like dot in its own wallet everything is DYOR.
The information you need is in 📚 you can read (Independizate de papa estado ebook) in short (DYOR) in play books, find free and paid books about cryptocurrencies, it is up to each person to investigate.
Isaac Asimov left a legacy to the future look for phrases from this character write down all the data that one finds there would be not enough time this is just a 💧 in the ocean.
Good luck in learning and advice to be self-taught if you really want to win newbie. 👁️∆👁️