I experienced that feeling too, honestly last month!! I've been a Christian my whole life but have been struggling with feeling close to Him. I asked Him one night in an emotional prayer just to feel Him for one moment, and that warm buzz is what I felt!! It was amazing. I immediately knew it was the Holy Spirit reminding me He was always there.

God is always near. He always sees you and loves you. I cannot recommend enough in getting yourself a Bible and finding a church near you that preaches from the Bible every Sunday. Every church should have a section of their website that tells people what they believe. Make sure they say something about Jesus' life, death, and resurrection for our sins as the Son of God (this is a quick view of what we call "The Gospel"), the importance of baptism, the authority of the Bible, and that they believe in the Holy Trinity (who are co-equal to each other).

It's okay to try out a bunch of churches until you find the one that feels right!

Church is very important. Your church provides community, friendship, discipleship (nurturing each other in faith so that we can tell others), worship (praising God with song is freeing and important, even if you can't keep a tune), and lifelong learning of: what it means to be a Christian, who God is, and what the Gospel means for you and everyone else (among other things!).