We actually have our own guide on this, but the above video from Lowe's is a good basic guide too. Do make sure to read the installation instructions that come with the faucet, though. Sometimes, there are important variations. We've only included a video on kitchen sinks here because the process of installing a bathroom sink is largely the same. However, you can always check out this video from RONAinc if you want to see the process.
Need a quick fix? After having a plumber come out to your house, they might tell you the part needed to fix your toilet or sink issue is going to take a week. Don’t be too amenable if you can’t wait. There’s no shame in working with another plumber who can get the part and do the job when you need it. If you’re doing the job yourself, be sure you know these tips for completing a plumbing fix like a pro.
Plumbers in Australia have licensing requirements that differ from state to state but it is generally accepted a 4-year apprenticeship with a further minimum experience of 2 years (6 years total) and a further curricular requirement as a benchmark for licensing. Licensed plumbers are also expected to maintain minimum relevant training requirements to maintain their plumbing license