Some questions about Masterpiece Template? (Free version)

[Templatesyard]

Hi, there! I’ve download masterpiece template, but I have some doubst:

How can I change at posts the “By” before author’s name and the “on” word before the date?
How can I tranlsate “continue reading” text into my language?
How can I add my Instagram’s gallery at the own footer?
And finally, how can I resize my title’s image? In my opinion it looks too little

By the moment I’m using an private blog for my tests. So I can’t give you my place’s url.

Thanks a lot for your help.

[Author]

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