Mutual fund SIPs can help you achieve any goal. For example Rs 10,000 saved every month can create a corpus of Rs 1 Crore after 20 years!
Mostly people start planning for retirement when they are in their 40s or 50s. By planning late you loose on compounding returns on your investment. The best to start Retirement Planning is when you start earning!
You can invest in mutual funds for 1 day to many many years depending your investments needs. Plan your Lumpsum Investments based on your future requirement of cash flow!