Introductory Mathematics:

Algebra and Analysis

by Geoff Smith

This site supports an associated book (ISBN 3-540-76178-0), published in February 1998 by Springer as part of their SUMS series. The current list price is £15-95 in the UK, and $29-95 in the USA, but you may do better shopping on the internet.

Springer sites.
Reviews of this book, booksellers and internet mentions.
Amplifications on material in the book.
Exercises and solutions.
Corrections and howlers.
Read the Preface and Table of Contents.
Other books in the SUMS series with web sites are Sets, Logic and Categories by Peter Cameron of QMW, University of London and Topics in Group Theory by Geoff Smith and Olga Tabachnikova.
Here are some entertaining and informative mathematics sites.
Geoff Smith