F2pool is a Chinese multicurrency mining pool founded in 2013. Now it has servers located in the USA, Canada, Russia, Singapore, and several other countries. The pool has a big number of supported coins. Currently, it is possible to mine around 40 currencies on F2pool.
Cruxpool is a mining pool made for miners by miners and operated by the company ILIIUM. It provides a bunch of tools to help miners monitor their mining rigs: real-time statistics, professional support (with a dedicated Discord), 0% fees for two months, very low threshold (0.01 ETH), and complete API and tutorials.
UniPool is a BCN, TRTL and XMR mining pool. With servers based on U.S.A and Europe.
If you need, on Discord, UniPool team can help every new miner to start mining.