Hi irraju
I'm not sure I understand the question correctly, because "AWS Solutions Architect" is already the name of a certification. In fact it's even the name of 2: the associate-level one and the Professional one. (But you can only pass the Professional if you already have an associate level Solution Architect certification active, ie validated in the last 2 years)
If your goal is to prepare to pass the AWS Solution Architect associate exam in order to get certified, then indeed the ACloudGuru courses are really worth the cheap price (I'm not affiliated to them in any way). Obviously reading all the whitepapers, a lot of documentation, and having an account to get some hands-on experience is a must-do (and the generous free tier AWS provides let do a ton for free, or for just a few extra cents)
A few months ago, after passing the Solution Architect and Developer certifications (associate level) on my spare time, I wrote a few 'post-mortem-ish' article because I found is really worth, but not as I thought it would be. Maybe you'll find this helpful to prepare your training: Preparing to pass AWS certifications could improve your skills significantly
A final warning though: you'll learn a lot in the journey, but be prepared that this requires quite a lot of studying, especially if you're not doing aws stuff on a daily basis. It's not rocket science, but there's so much to know!