Yes you have to attest all certificates from, if you are accountant or engineer, you should attest ur certificate from Qatar embassy where u did ur education, and
if your child born in australia you have to attest it from qatar embasy in australia and foren ministy in australia

your marriage certificate shall be attested from Qatar embassy in Bangladesh if you are married in Bangladesh..

if you are educated from Bangladesh you have to atest ur certificates from Qatar embassy in Bangladesh and Foren ministry in baglsadesh...

no need to attest transcripts only main degree...

3 bed flat rent furnished will be QAR8000/month minimum
Mobile bill: QAR 500/month average with moderate intl calls
Cost of living is very high here...

Internet will be QAR 230/month
cable tv QAR 150/month
Price of Toyota prado new is QAR160,000 full option
living condition in doha is very favorable safe and secured

climate here 6 months very hot and remaining comfortable