on " electric easier to learn on":
I assume its referring to Action. Action is the distance/effort to press the string to the fretboard. acoustics usually have a higher action, making it harder to fret the notes properly/quickly.
The plus side of an accoustic is that you don't need power, cables, amp, FX, etc.
The plus side of an electric is that you get to use an amp, FX, power etc.
Playing the Star Spangled Banner with the amp cranked to 11 on the 4th of July is powerful fun.
For your type of music, I'd normally assume an Acoustic would fit in. As the only piece of equipment you need, it keeps your investment smaller.
Try out different guitars, especially in different price ranges. You should notice a difference every hundred dollars or so...
Bring your brother. Let him tune the guitar while he tries it out. Then, when you pick it up to try it, it's already in tune. An out of tune guitar will make any random strumming you try sound like a bad guitar.
With the guitar in tune, give it a strum while not holding any strings down on the neck. This gives you a sense of what it sounds like, that you can compare to other guitars. Since you don't know any chords, this is the simplest way to hear the guitar's sound.
To see if you like the Action/picking, start with the fat string (on top), and use your index finger to hold down a string at a fret position (those little bars on the neck). Put your finger just behind the bar, not crossing over. Pick that string with your other hand (and a pick or your thumb). Now release that finger and move to the next fret position with the next finger, and repeat. Lather rinse repeat for your 4 fingers/4 frets. Then move to the next string down.
a) you'll look like you are playing a scale (a scale is actually that procedure, just not playing every position)
b) you'll hear the single notes it can produce
c) you'll get a sense of the action/ease of fingering.
Buy a guitar stand or a hard case to keep the guitar in/on. Friends who don't have a proper place to put their guitar get guitar stands from me on their birthdays.