keep it up. i started around your weight.. now i m 165cm 63kg.
i m doing stronglifts 5x5.. started from empty bar. my strength do roar up.. but weight gain is slow.. up n down..

i started February last year..

if you want to know.. my drastic weight gain is in october last year, when i workout at gym rakyat (before this fitness first).. my secret is MILK.. i drink 500ml x 3 times a day.. so it seem you did it too..

but when i started drink it.. my workout weight is already heavy i already squat and deadlift 90kg++, press 40kg++, bench and row 50kg++.

try to make sure your workout hi intensity.. e.g. after doing squat, u r out of breath. if not, you muscle still lazy n sleep.

when workout day only full load with carbs.. rest day try minimize any not necessary carbs.
after workout just take carbs only to recover your energy..

sometimes when you eat to much than your workout intensity, you gain some fat..
remember calorie in = calorie out..

try to cycle your milk from full cream to low fat..

you have to experiment yourself which food and diet work best for you.

left your ego at home.. start low and climb slowly.. time is passed by.. when you realized it.. you already lift big and got nice base with body transformation.

you to have experiment with your body. for me, heavier weight is really trigger my muscle.
just doing what you are doing. if you already got your base, then do what ever you want. the important is to gain mass first, after that shape it.
dont be confuse.. rippetoe sure know what he is talking and why it work for skinny or beginner. same as westside for skinny *******.

the motive is to wake up the lazy muscle and activate the growth hormone.

everybody is different. you have to try which one work best. for me as i am former skinny, it sure work.

try stronglifts.. same as rippetoe. different is 3x5 and 5x5..
hvt also good. its between strength training and bodybuilding. sometime i switch to hi reps low weight also.
but for beginner, stick to basic, total body. u will get strong core..

set some target..

for me, i am targeting to deadlift 140kg, now 125kg.. seeing your poundage is increasing, sure give ourself some motivation.

thats just me okay..