Yes, ITR-1 and ITR-4 are simplified returns that can be easily filled out with basic knowledge. Also, if you are a salaried employee, then you can directly upload your Form 16, and all the details will get auto-populated in Clear's (previously ClearTax) e-filing utility. This will make your ITR filing process much smoother and simpler. For more complex ITRs, such as ITR 2 or 3, it is better to gain some knowledge or seek expert advice.