1- Where do i find information on Solution manager ?
Its one more server appart from R/3 System
2- What is solution manager?
Its a server - In the networking(Architect) language It like a middle ware or Inbetween all the SAP system or centeral unit in the SAP Landscape Architecture.
3- Does Solution manager come, If you install ECC5.0 or ECC6.0 ?
4- For interview point of view, what should i know about solution manager,ECC6.0 and ECC5.0 ?
It depends what u want to study for the interview - like Early watch reports - Configuration of SM - Data Flow - RFC connection -IDOCS - ALE and many please.
5- What is the difference between ECC6.0 and ECC5.0 ?
6- What is BI ? Does it come with ECC6 or ECC5 ?