First and foremost, if you're an amateur, don't go for the expensive camera immediately. Get a decent camera and practice on it first, set your hands on that camera before progressing to the new and expensive one. Amateur photographers need practice and that can be done on a less expensive camera.
You will discover and learn about photography and know which camera to upgrade to instead of buying a random overpriced camera.
If you're learning photography and want to grab every opportunity to click versatile pictures, carry your camera with you at all times. Good opportunities come unexpectedly, because you never know what you may see.
If you know a location where you can go back and click the picture, note it down and take you camera and tripod next time you are there (you can make a list of what to carry such as your tripod, flash, etc.).
When you look at objects from a photographer's point of view, you will never run out of things to capture with your camera; you will see the world from that point of view. You will find inspiration from anything and every picture will come out beautiful.
You can use Adobe Photoshop or other software available in the market for post processing. You can change colors, edit things in the image using these software to make your picture look more appealing.
In case you are looking for portrait photography, fill the entire frame with the subject you are taking the photo of. Explore your camera and alter the light sensitivity and exposure for the picture you are taking.
Click multiple shots of the same object in different angles and views. Oh and don't forget to charge your batteries every time you are out discovering new possibilities.
If it isn't focused properly, you might end up blurring the subject and focusing on something else when viewing it on a bigger screen. As mentioned earlier, before you take the picture, check the settings for light sensitivity, ISO, shutter speed, white balance, etc. If you are getting a lot of blurry images, try changing the shutter speed.
Here's a crash course - move in closer, be quick, compose with care, take as many pictures as you can while choosing different angles, focus on the subject, keep experimenting, look for light sensitivity, watch the weather and work with it, keep the images as simple as possible, and be creative.