Well, scanner aren't that bad when you lack time to do some stuff yourself.
Of course you have first to read paper , and how vulnerability work starting by the nicely documented site of OWASP.
Then you can start to try yourself on different site like hackme or hackthissite.
Once to take a grasp of it take a look at ZAP,Burpsuit,w3af etc ... oh and sqlmap ofc.
Everyone telling you to ban vulnerability scanner from your vocabulary don't know how it make life easier when you try to find some vulnerability.
The cons is the number of request he does... and it doesn't mean that you shouldn't test for vulnerability yourself.
If you learn "hacking" hum ... well you will often end up using both scanner and manual test.
They are going together.
Although your message, "I got some results" means shit to me.
Doesn't prove anything, be more precise : I tested blabla and got blabla vulnerability in x times.
but bloblo found less vulnerability but was really fast .
Some samples are good too.
A good process when you talk with this community, show them that you did research and that you did your homework.
