Introducing solid foods to 5 month old?

I'm a second time mom, my oldest child was 6 when my son was born -so it's been awhile. I feel I forgot everything. He is now 5 months old so I'm needing advice in what I can and can not feed him? Any Seasoning? I had help with my daughter (my 6 year old) I was always working and putting overtime so my mom watched her and did everything for me when it came to that. Any feedback is much appreciated thanks!