Every SharePoint undertaking will at one point face the following questions: how long will it take, how much will it cost to implement, and how will we use it?
This section deals with best practices regarding the following questions: How to install SharePoint? How to configure it? How to keep it operating? All best practices are targeted towards the IT Pro.
Deployment of software artifacts is important. This section discusses best practices.
It's very common that SharePoint farms use virtualization techniques. This section is dedicated to best practices concerning virtualization.
Search is a complex topic and important to almost every company working with SharePoint. This section discusses best practices.
http://technet.microsoft.com/en-us/library/cc262794(v=office.12).aspx, when to crawl content.
http://technet.microsoft.com/en-us/library/ff599528.aspx, FAST search topology.
how to use a dedicated web server for crawling.
This section provides an overview of planning and design considerations for SharePoint Extranet Environments.
This section discusses best practices regarding SharePoint 2010 farm topologies.
Books remain the most important resource for learning a new topic. Here's a suggestion of the best SharePoint 2010 books out there.
What to put in your bag of tools?
Here is a list of sites to ask questions.
1. Luis Valencia WordPress Blog (Real Life Problems with all SharePoint 2010 Development related, like content types, lists, feature upgrading, etc)
2. Field Notes on SharePoint Architecture, Strategy & Governance (Guidance on SharePoint Governance Framework with tools
Bjoern H Rapp, The SharePoint Viking (Developer-oriented blog about all things SharePoint 2010.. and SharePoint 2013)