Once you know a few chords, you can play many of the songs in the 8chords100songs worship guitar songbook. What about strumming and singing at the same time? That takes a bit of skill and sometimes it feels like you have to have 3 brains to do that. Here is an easy way to begin to develop your skills at singing while strumming.
First: take a song that you know very well with very simple chords. Learn to strum simple down strums on the quarter notes and switch the chords on time.
Second: Start to strum the song and HUM the melody along with your strumming. At some point in this exercise start to forget about your right hand and let it go into a bit of an auto pilot strumming.
Third: When you are comfortable switching chords and humming, continue that simple pattern and start singing the words.
Once you can do that well, you can begin to hum or use words and add some simple flips or intermediate strumming techniques.
Take it slow and perfect each step along the way. This is the best and only way to perfect the skill of singing and playing at the same time. It may take several days or weeks to get comfortable but it will come. You will find more great tips and strumming patterns in the Modern Worship Guitar Lessons course from WorshiptheKing.com