Libre theme multiple issues (logo/ spacing/ gallery)

I have downloaded jetpack to use a logo on the homepage, but I need the logo smaller and to align with the menu.

You should be able to use some CSS to change the maximum size and the alignment of your logo – but you’ll also need to adjust the alignment of the menu a bit.

/*Smaller logo*/
@media screen and (min-width: 45em) {
  .site-logo {
      max-width: 200px;
  }
}

/*Move logo to right, above navigation*/
  body:not(.sticking) .site-branding {
      float: right;
      width: auto;
}

@media screen and (min-width: 70em) {
  body:not(.sticking) .main-navigation {
      width: 100%;
  }
}

I’ve used body:not(.sticking) to prevent these changes from impacting the layout of the header when scrolling. The transition will look a little different, now that the logo is moving across the page ??

I would like to use a gallery as it is used on libra demo

Is this they gallery you mean?
https://libredemo.wordpress.com/2011/07/07/bold-color/

Jetpack can enable those for you ??
https://jetpack.com/support/tiled-galleries/

Make sure you have ‘Tiled Galleries’ turned on under Jetpack > Settings > Appearance.

How do I choose the information provided on each post? I mean date,category, author. How can I remove the author?

CSS can do that, too. Using my browser inspector, I’m able to identify the author name, and then hide it:

.entry-meta span.byline {
   display: none;
}

Let me know how it goes!

Hey Chad

Thank you so much for the help!
I will keep you posted

Cheers!

You’re welcome!