which altcoin i should mine, the place i live in has almost free electricity, so want to get the opportunity. i can buy the machine and has no mining experience.

will appreciate any opinions

Better to mine that you can afford to buy if you have s9 miner then you can mine with bitcoin cash  because its more profitable than bitcoin as of now base on my own calculation.. But if you can't afford to buy asic miner build your own rig as alternative to mine with altcoin..

Since you have free electricity avalon 7 or antminer s9 will be the best option..

Everytime someone says BCH is going to pump...it dumps... So don't say or predict anything like an octopus.. Hold your coins and sell it on right time🤯

you need a BTC aka sha256 miner to start with that does at least 3th or better there is a few pools you mine them on ...

right now my A6 makes about 14 a day only because of the price of the coin . it i was still at 200 to 400 a coin , it wouldn't be worth using a 3 th miner minng BCH .

mining BTC with any thing below a 7 th miner might be not be worth it .