Hey there! I switched full time to Linux, oh goodness, about 10 years ago! At that time, it was a risk. Nowadays, Linux is pretty ubiquitous.
If you are looking for some resources, here are a few:
- The RHEL YouTube channel is publishing new content: https://www.youtube.com/user/rhenterpriselinux
- You can run through some [Admin101] level labs (for free, no registration required) on https://lab.redhat.com
- Some of my collegues just wrote a book on RHEL administration! https://www.amazon.com/dp/1800569823/ref=cm_sw_em_r_mt_dp_Z5HCQPD3YD73ZVNBVSGG