"The Portable Edmund Burke" is useful in supplying a number of pieces not otherwise easily obtainable. It, like most books in the Viking Portable Library series, is missing the notes and especially the index that many people would have found useful. To make room for the 47 selections, several have been severely abridged. "Reflections on the Revolution is France" is whittled to leave only about 30% of it. Anyone needing this should look to a full-length treatment. Good ones include the Yale edition of Frank M. Turner, which has an excellent index, occasional notes, and several first-class essas; and Oxford World's Classic edition of L.G. Mitchell, which also has a helpful index and good notes. The speech on conciliation with America is similar chopped to a mere shadow of itself. The Lamont edition is not easily obtainable, which is a pity, but the notes and index of the Cambridge edition of Ian Harris will do well enough for most students. 'A Vindication of Natural Society' survives better (about half of it survives in this edition), but again the Harris edition is a better choice.
If you want a wide picture of Burke's writing, this text is probably for you. If you want to read any of his important texts, then choose something else.