Dear Fresher,
In accounts, there are various types of accounts to be maintained, i.e. Proprietor ship firm, Partnership Firm, Private Ltd Company, Public Comapny Limited by Share holding, Public Section Ltd Company, Gogvernment department accounts, accounts to be maintained in any cooperative society etc etc.
Basically, in all now a days if the firm has sizeable business, they need to have the services of a chartered accountant for Income Tax, Sales / Value Added Tax, Excise, Service Tax etc. etc.
So if your company has a chartered accountant, better ask him what types of books of accounts are required to be maintained by you. Accordingly you can get ready books of accounts from the stationery shop, if he says to keep the accounts in Computer Software, then ideally is Tally, TCS EX, Busy, Munimji etc. etc.
Better ask your chartered accoutnant for further briefing.
For day to day rough accounting you can maintain the same on excel files, for which you are welcome, but you have to disclose your qualification and also how expert you are in Excel and Tally etc software.
Best of luck