Cambridge English: Advanced

Nice start, which clearly states your reason for writing.

We say 'the Internet'. Notice also that we capitalize 'Internet'.

This sounds a bit awkward. I suggest something like: 'The biggest advantage of reading in electronic format.....

'the Internet'

'the/a'

'a'

This should be 'are looking'

'Convinced' usually goes with 'of' or 'by'.
Examples:
'...convinced of the need for electronic books. '
'...convinced by the arguments for using electronic books.'

You need 'a' here.

'become bored (to tears)' would be more natural.

You need 'nearby' here.

You need 'number' here.

It would be better to say 'are used to' or 'are accustomed to'.

You need 'the' here.

'to' would be the best preposition here.

Something like 'the situation' is needed here.

Something like 'only if prices of computers decrease and more and more people can afford to use the Internet, will we be able to start thinking