Well, I hope it does help!
may I ask what is it exactly on media queries that you are struggling on? Because I may be able to help out to explain or find a resource to pass onto you (I am not joking I keep a loooong list of helpful resources in my Evernote haha). in the above post to another fellow member, I mentioned this free course about responsive design on Udacity. I did learn responsive design through Udacity, which was super helpful, although not sure if it is this exact course. Still, hopefully, this is as good! 
So, I had a peep at your project and yes, I donāt likeā¦but that is because I SUPER LOVE IT!

Okay, there is some room for improvements, not majorly as you are almost there 
First, I will tell you what I do love about your page
Your color scheme is just perfect. It works well with the Parakeets because of their appearance, but also their personality, which the color scheme is cool, but it promotes friendliness.
I love the parakeet logo, it is just simply cute and works well with the branding of the project
The typography choice works well too, especially the font of the headings, it works as it symbolises the culture of London (for its history), yet the san-serif font does work in harmony because in some way London has its modern elements too. Also, the serif headings got that friendly vibe too.
Okay, so could be improved? (I will bear in mind this is a work in progress), it is mostly the use of spacing.
As cute the Parakeet logo is, I would make it slightly smaller to give room in height-wise of the nav-bar. But also, I would give some room between the logo and the heading text āLONDON PARAKEETSā
Also, it is best to add padding between the heading page and the text:
Weāre the UKās most abundant naturalised parrot. We became established in the wild in the 1970s after a few of us captive birds escaped or were released.
To understand what I mean, see my tribute page where I added padding between the heading page and the title:
The life of John Steinbeck
Also, you added the space between the heading āAbout usā and its body text? that works well and that also should be applied the same the āFind usā heading and its body text too 
But, honestly, this is fantastic work and excuse me for being nosy but do you have any design background??? Because I think you also have the potential to become a web designer as well as a web developer 
I hope this helps and I didnāt go too far on my thoughts! haha