It’s not a matter of just installing software on your computer and start confirming transactions.To have any realistic chance of actually mining blocks, you would need to obtain ASIC hardware specifically designed for bitcoin mining.

If you are referring to mining "solo" it's not recommended. It takes to long(years) to accomplish anything.
Mining in a pool will reward you quickly. However, focus on the "smaller" sized pools, as they pay you everything
your mining equipment earns. Most "Big" pools do not pay all of the reward.

Take sometime and look through the mining boards, and read somethings on the subject. There is ALOT of
information here at this forum. Goodluck!!!

No, Exodus doesn't offer that feature. You can not change your fee based on block fee (Satoshi/byte). Use Electrum. It has that

I'm not so sure what you're asking here.

If you're looking for a place to exchange LTC to BTC use an exchange such as poloniex, GDAX, or bittrex.

If you're looking to store bitcoin, use Electrum.

If you're looking to store both bitcoin and Litecoin in 1 wallet, use something like Exodus, which supports multiple currencies.