This is very open ended question. For any definite answer, one need to understand background, goals, family constraints, and so on.
The simplest planning for short term (Say less than 5 years) is open RD . Till 5 Lakh rupees, there is basic insurance for bank FD. so its relatively safe.
The simplest planning for (very) long term is invest in index fund using SIP and step up SIP as your salary grows.
The situation becomes slightly complex when you are near to your goal (say 10 years away). Every one has different risk appetite and ability to invest.
in Any case in general when you are away from goal, you should be more in equity ( todays value, irrespective of invested value) and when you are near your goal you should be more in debt /fixed income and gold etc (again todays value, irrespective of invested value)
there have been different discussion threads in forum which have touched this aspect e.g
Whether small cap or large cap, whether Fin sector or IT sector… in long run there is always rotation and (typically) we can not predict who wil be winner in next month, next year, next decade. So IMHO we shouldn’t bother much about it when we are starting investment journy.